#include<iostream>
#include<vector>
#include<queue>
#include<cstring>
#include<cmath>
#include<map>
#include<set>
#include<cstdio>
#include<algorithm>
#define debug(a) cout<<#a<<"="<<a<<endl;
using namespace std;
const int maxn=1e5;
typedef long long LL;
inline LL read(){LL x=0,f=1;char ch=getchar();	while (!isdigit(ch)){if (ch=='-') f=-1;ch=getchar();}while (isdigit(ch)){x=x*10+ch-48;ch=getchar();}
return x*f;}
int main(void)
{
  cin.tie(0);std::ios::sync_with_stdio(false);
  LL T;cin>>T;
  while(T--){
    LL n,a,b;cin>>n>>a>>b;
    LL num1=(n+1)/2*a;
    LL num2=(n-2)/2*a+b;
    LL num3=(n+2)/3*b;
    LL num4=n/3*b+a;
    LL num5=(n-2)/3*b+a+a;
    cout<<min(num1,min(num2,min(num3,min(num4,num5))))<<"\n";
  }
return 0;
}
